Improvement in chimney-tops



UNITED STATES PATENT OFFICE.

VILLIAM HERVEY CONNOR, OF MUSOATINE, IOVA.

IMPROVEMENT IN CHlMNEY-TOPS,

Specification forming part of Letters Patent No. 15 1,759, dated June 9,1874; application filed April 1e, 1814 To all whom it may concern:

Be it known that I, WILLIAM HERVEY GoN- NOB, of Muscatine, in the countyof Muscatine and State of Iowa, have invented a new and usefulImprovement in Chimney-Tops, of which the following is a specification:

The invention will iirst be fully described,

Yand then pointed out in the claim.

In the accompanying` drawing, Figure l is an elevation, showing the openor leeward side of the cap over the chimney. Fig'. 2 is a verticalsection of Fig. 1, taken on the line x Similar letters of referenceindicate corresponding parts.

A represents the chimney or Ilue. Bis the cap. In this example of myinvention the cap is in pyramidal form, arranged on the vertical spindleC, .with its base D at an angle of fortyive degrees, (more or less.) Eis the vane, which is attached to the upper and leeward side F, whilethe Windward side G always presents an inclined surface to give thecurrent of air an upward direction, and leave more or less of vacuum onthe leeward side, which consequently increases the upward draft. The capis supported on the spindle by the curved arms H, three (more or less)radiating from a common center, I, and each attached to the base ofthecap. One of these arms is perforated with holes K, which allow the capto be adjusted on the spindle to vary the inclination, as may be foundnecessary. rlhe vertical spindle O is supported by a bar, J, across thetop ofthe chimney, the ends of the bar being bent down and fastened tothe outside of the chimney, as seen in the drawing. rIhis cap may beInade in any manner suitable for the purpose, so as to'cover theopenings of the chimney or flue, and turn freely on an up right spindleguided by a vane to present its open side to leeward and present itsopposite inclined side to the wind, substantially as shown in thedrawing.

Having thus described my invention, 1

claim as new and desire to secure by Letters Patent- A conicalcurrent-guiding,` chimney-cap, on which is placed the vane, providedwith arestrap H, perforated at several points, I K, to allow theObliquity of said cap to be changed, according to the draft required.

WILLIAM HERVEY CONNOR.

Titnessesz D. M. LAMBERT, FRANK THURsToN.

